PESAN DAN TANGGAPAN :
New Form of Matter-antimatter Transformation Observed at BABAR
Oleh : Romulus Godang
Jumat, 16 Maret 2007 (07:44 WIB) dari IP 18.104.22.168
Pertama sekali ditemukan particle (matter) turn into its
twin antiparticle (antimatter) in D-meson system sebelum decaying. This phenomena disebut D0-mixing. Dari 10^6 D0-mesons (matter) ditemukan 500 of them had changed into D0bar-mesons (antimatter twin) before decaying.
Similar paper has been published from CLEO (another experiment at Cornell University) with confident level limit of D0-mixing.
See R. Godang et al. (PRL 84, 5038, 2000) hep-ex/0001060.
Penemuan baru yang kami observed di BABAR at Stanford Linear Accelerator Center (SLAC) akan mempengaruhi pandangan scientists tentang fundamental theory so called "Standard Model" --] beyond Standard Model: MSSM, 2HDM,
New Physics, SUSY, GUT etc ?
Detail information about D0-D0bar mixing is available at:
This is a very exiting moment for everyone since it is the first time we have detected a D-meson making the switch. We had observed other kinds of mesons turning into antimatter counterparts such as in K-meson by Cronin and Fitch Nobel price 1980 (Brookhaven Laboratory in NY) and
in B-meson by BABAR experiment (SLAC) and Belle experiment (Japan) in 2001.
Further study for testing the Standard Model is underway. We might find new particles: Higgs Bosons, SUSY Particles, Black Holes, Extradimensions, Gravitons at LHC (Large Hadron Collider) such as CMS and ATLAS experiments in Switzerland by 2007/2008. Tevatron at Fermilab (D0 or CDF experiments) have a chance to see the Standard Model Higgs particle if its mass [ 170 GeV.
| revisi terakhir : 16 Maret 2007